Mission Statement

PQIA’s mission is to serve the consumer of lubricants by testing and reporting on the quality and integrity of lubricants in the marketplace. 

It is expected that this improved visibility of quality will lead to wider conformance by lubricant manufacturers to specification and performance claims.

Featured Story

Buying Motor Oil Online

While this is a very efficient and easy way to shop, the Petroleum Quality Institute of America advises consumers to take the time to look for the specifications the product meets when buying motor oil online. If not shown on the first screen, click or scroll for more details before adding motor oil to your cart.

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Recent News

Results in on Lucas, CITGO, and Sunoco

The results of the tests conducted on the samples meet the SAE J300 specifications for the SAE Viscosity Grade listed on the product label, and are consistent with the listed API Service Categories. Lucas High Mileage  SAE 5W-30, API SP/ILSAC GF-6 CITGO Supergard SAE 10W-30, API SN/ILSAC GF-5 Sunoco Ultra High Mileage SAE 10W-30, API SP/ILSAC

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Test Results: Road-Tech, StarFire, and Vantage

Samples of the following three brands of motor oils were recently examined by PQIA. Click bottles for detailed assessments.  Road-Tech Synthetic BlendSAE 5W-30API SP/ILSAC GF-6A Star FireSAE 5W-30 API SP/ILSAC GF-6A Vantage Synthetic BlendSAE 10W-30API SP/ILSAC GF-6

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Test Results: JEGS, Diamond Fleet, and PennGrade

Samples of the following three brands of motor oils were recently examined by PQIA. Click bottles for detailed assessments. JEGS Full Synthetic Motor Oil 5W-30 API SN, ILSAC GF-5 Hot Shot’s Diamond Fleet SAE 15W-40 PennGrade Partial Synthetic Motor Oil SAE 5W-30

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Motor Oils for Classic and Vintage Cars

The Petroleum Quality Institute of America has from time-to-time encountered motor oils containing high levels of a multifunctional oil additive called zinc dialkyldithiophosphate (ZDDP). This additive contributes anti-wear, anti-oxidation, and corrosion inhibition properties to the oil. ZDDP has been used in motor oil formulations almost universally for decades, and oils with high levels of ZDDP are often promoted as being better suited for engines in older cars with “flat-tappet” lifters.

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DuraMAX, Lubir Edge, Super S SuperSyn

Samples of the following two brands of motor oils were recently examined by PQIA. The results of the tests conducted on the samples show the products meet the SAE J300 specifications for the SAE Viscosity Grade listed on the product labels, and are consistent with the listed API Service Categories. Click bottles for full report

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Havoline, Spectrol, and Mobil Super Motor Oils

The results of the tests conducted on the samples of Havoline, Mobil Super, and Spectrol show the products meet the SAE J300 specifications for the SAE Viscosity Grade listed on the product labels, and are consistent with the listed API Service Categories.

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Licensed GM dexos®1 Gen 2 brands

General Motors recommends the use of dexos™ approved engine oils for global factory and service fill in spark ignited and diesel engines. Importantly, the brands with dexos approved licenses varies over time. GM’s list of Licensed dexos® brands is available online and updated quarterly, with the most recent update on December 16, 2020.

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Test Results – O’Reilly, UltraLub, and Unival

The results of the tests conducted on the samples of O’Reilly, UltraLub, and Unival show the products meet the SAE J300 specifications for the SAE Viscosity Grade listed on the product labels, and are consistent with the listed API Service Categories.

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Above and Below Average

As seen by the differences in the API SN and SN PLUS samples examined by PQIA, the average of the SN PLUS formulations shows lower calcium and higher magnesium levels than API SN. The same can be seen with the new API SP Service Category, and for the same reason; to protect engines from potentially severe damage due to LSPI.

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Test Results – Chevron Supreme, and ACE

Samples of Chevron Supreme SAE 10W-40 and ACE SAE 5W-20 were recently examined by PQIA. The results of the tests conducted on the samples show the products meet the SAE J300 specifications for the SAE Viscosity Grade listed on the product labels, and are consistent with the listed API Service Categories.

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PASSENGER CAR MOTOR OIL

PETROLEUM QUALITY INSTITUTE OF AMERICA SAMPLE SUMMARY/PASSENGER CAR MOTOR OIL Passenger car motor oil is the lifeblood of your engine. In addition to lubricating moving

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AUTOMATIC TRANSMISSION FLUID

PETROLEUM QUALITY INSTITUTE OF AMERICA SAMPLE SUMMARY/AUTOMATIC TRANSMISSION FLUID Automatic Transmission Fluids are carefully balanced to lubricate and protect your transmission while providing smooth and

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ANTIFREEZE & COOLANT

PETROLEUM QUALITY INSTITUTE OF AMERICA SAMPLE SUMMARY FOR ANTIFREEZE & COOLANT Antifreeze/coolant is critical for protecting engines. The primary function of the fluid is keep

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